Which of the following is NOT a key capability of Sentinel?

• A. ~40 km range
• B. 360° coverage
• C. All-weather/day-night operation
• D. Targets only fixed-wing aircraft

Answer: (D)

Sentinel is built to handle a wide range of air threats, with capabilities that keep it effective in real-time defense. Its approximate 40 km range allows it to detect and begin tracking targets early enough for a quick response. The 360° coverage ensures there are no blind spots—the radar can monitor the entire sky around the site, which is essential for defending against threats approaching from any direction. All-weather, day-night operation means Sentinel stays functional regardless of weather conditions or lighting, maintaining situational awareness and target cueing at all times. Because of these features, Sentinel is designed to track diverse targets, not just one type.

The statement that Sentinel only targets fixed-wing aircraft isn’t consistent with its role. It is intended to detect and track multiple platform types—such as helicopters and unmanned systems—in addition to fixed-wing aircraft—so that it can provide timely cueing for engagement against a variety of threats.